Pertaining to a man who is of sub-average weight for his height. Also used to describe such people who allow the condition to effect their mood. This term is commonly used in the north of England.
"eh up blackcock, howz the whether up there???"
"Now now blackcock, no need to be such a moody cunt"
"Now now blackcock, no need to be such a moody cunt"
by Errol Richardson December 07, 2006